WaringBlender Lid Center Measuring Cap (19BL50/19BL49)

My blender's model number is PBB209. Does it fit inside the black clover shaped lid?

This will be the 3rd lid we have had to order for this blender.Has anyone else experienced the lid cracking after only a few times of use?

This was "barely" too large in circumference for my blender. What is the next size down?